Needle loom in which the frequency of at least one of its vibration modes can be adjusted

摘要

a manually or automatically the frequency of a natural mode of vibration of a aiguilleteuse (1) as a function of the speed of needling, so as to reduce the amplitude of vibration of the aiguilleteuse during needling.the adjustment is preferably obtained by modification of the mass and the stiffness of the structure of the aiguilleteuse or by altering the inertia rotation of a drive shaft of the aiguilleteuse.